.flex_ctr{
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

/* 字符大小 */
.font_xl{ font-size: 32px; }
.font_lg{ font-size: 26px; }
.font_md{ font-size: 18px; }
.font_sm{ font-size: 16px; }
.font_xs{ font-size: 12px; }

/* 边框样式 */
.border-none{ border: 0 !important; }
.border-btm{ border-bottom: 1px solid #dcdfe6; }